Why are wire terminals gold plated?

I. Wire terminals why gold plating? 1. antioxidant gold has strong antioxidant ability, as a transition metal, its ionization energy is as high as 890.1kJ/mol, second only to mercury (1007.1kJ/mol), which means that the oxygen to take an electron from the gold is extremely difficult. Gold is not only higher ionization energy than other metals, because of its 6s orbitals have no pair of electrons, the enthalpy of atomization is also very high, the enthalpy of atomization of gold is 368kJ/mol (mercury is only 64kJ/mol), which means that the gold has a stronger bonding of the metal, the gold atoms are strongly attracted to each other, and it is not easy to other atoms to drill holes in the 2. Prevent corrosion of gold is a very poor vivacity of the metal (in the order of the order of the metal activity table), generally not with acid, and it is not easy to prevent corrosion of gold. In the last), generally not with acid and alkali and other corrosive substances have chemical reactions, so it is not easy to be corroded, such as oxidation, sulfidation, etc. 3. resistance to plugging excellent resistance to plugging performance in addition to a reasonable and rigorous production process, in the gold-plated after the hardness and abrasion resistance will be improved to reduce the loss of the product to prolong the life of the product. Gold is an inert metal, at high temperatures are extremely difficult to oxidize discoloration, and the higher the purity, the thicker the gold-plated layer is more difficult to oxidize, the better the quality.

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